The 7 digits for Extracorporeal Assistance and Performance procedures:

1 = Section

2 = Physiological System

3 = Root Operation

4 = Body System

5 = Duration

6 = Function

7 = Qualifier

In extracorporeal assistance and performance procedures, equipment outside the body is used to assist or perform a physiological function. Extracorporeal assistance and performance procedure codes have a first character value of “5”. The second character value for body system is physiological systems. There are three root operations in the extracorporeal assistance and performance section, as defined below:

Assistance: Taking over a portion of a physiological function by extracorporeal means

Performance: Completely taking over a physiological function by extracorporeal means

Restoration: Returning, or attempting to return, a physiological function to its original state by extracorporeal means

The root operation Restoration contains a single procedure code that identifies extracorporeal cardioversion. The fourth character specifies the body system (e.g., cardiac, respiratory) to which extracorporeal assistance or performance is applied. The fifth character specifies the duration of the procedure, i.e., single, intermittent, continuous. For respiratory ventilation assistance or performance, the duration is specified in hours, i.e., < 24 hours, 24-96 hours or > 96 hours. The sixth character specifies the physiological function assisted or performed (e.g., oxygenation, ventilation) during the procedure. The seventh character qualifier specifies the type of equipment used, if any.

When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.